Best way to read only last two real values in a line using read in Fortran

[msz59]

@JohnCampbell

I do agree that there is a problem if real number strings longer than 20 digits are provided but I am not convinced by the solution. A Warning probably should be provided (we are using a 64-bit real)

I don’t get this. Why not use the same length for the token string and format? F20.0 is not enough for a 64-bit real anyway. The default list-formatted output of such a value is 1.2345678901234568E+021 (23 characters)

In the code example, the first delimiter is blank, which replaces all other delimiters supported.

This would make sense if you wrote

if ( index (delimiters, line(k:k)) > 1 ) line(k:k) = delimiters(1:1)

As it is now, it just blindly replaces any delimiter (including space) by a space. Semicolon is a legal fields separator in case when DECIMAL='COMMA' is activated. F2018 standard says:

13.6.2 If the decimal edit mode is COMMA during list-directed input/output, the character used as a value separator is a semicolon in place of a comma.

gfortran recognizes a semicolon as a separator even if DECIMAL has the default value of POINT (by an extension or error )

Should ```fortran be manually applied after selecting the </> icon ?

I never use that icon, typing ``` by hand but as I see now, clicking </> produces a pair of
triple back-quote sequences, so you would have to add fortran to the first of those. See the short discussion here. I suggested making fortran the default language on this particular discourse but maybe it is not (easily?) doable.